Question

Assertion: Soft iron is used as transformer core.
Reason: Soft iron has narrow hysteresis loop.
A. If both asseration and reason are true and reason is the correct explanation of assertion.
B. If both asseration and reason are true but reason is not the correct explanation of assertion.
C. If assertion is true but reason is false.
D. If assertion is false but reason is true.

Answer 1

Correct Answer - A
Hysteresis loss in the core of transformer directly proportional to the hysteresis loop area, that is why soft iron core is used in the transformer.